Add v4 models to ecs-agent module

Author: amogh09

ecs-agent/tmds/handlers/v4/state/response.go

@@ -0,0 +1,69 @@
+// Copyright Amazon.com Inc. or its affiliates. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License"). You may
+// not use this file except in compliance with the License. A copy of the
+// License is located at
+//
+//	http://aws.amazon.com/apache2.0/
+//
+// or in the "license" file accompanying this file. This file is distributed
+// on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+// express or implied. See the License for the specific language governing
+// permissions and limitations under the License.
+package state
+
+import (
+	"github.com/aws/amazon-ecs-agent/ecs-agent/tmds/handlers/response"
+	v2 "github.com/aws/amazon-ecs-agent/ecs-agent/tmds/handlers/v2"
+)
+
+// TaskResponse is the v4 Task response. It augments the v4 Container response
+// with the v2 task response object.
+type TaskResponse struct {
+	*v2.TaskResponse
+	Containers  []ContainerResponse `json:"Containers,omitempty"`
+	VPCID       string              `json:"VPCID,omitempty"`
+	ServiceName string              `json:"ServiceName,omitempty"`
+}
+
+// ContainerResponse is the v4 Container response. It augments the v4 Network response
+// with the v2 container response object.
+type ContainerResponse struct {
+	*v2.ContainerResponse
+	Networks []Network `json:"Networks,omitempty"`
+}
+
+// Network is the v4 Network response. It adds a bunch of information about network
+// interface(s) on top of what is supported by v4.
+// See `NetworkInterfaceProperties` for more details.
+type Network struct {
+	response.Network
+	// NetworkInterfaceProperties specifies additional properties of the network
+	// of the network interface that are exposed via the metadata server.
+	// We currently populate this only for the `awsvpc` networking mode.
+	NetworkInterfaceProperties
+}
+
+// NetworkInterfaceProperties represents additional properties we may want to expose via
+// task metadata about the network interface that's attached to the container/task. We
+// mostly use this to populate data about ENIs for tasks launched with `awsvpc` mode.
+type NetworkInterfaceProperties struct {
+	// AttachmentIndex reflects the `index` specified by the customer (if any)
+	// while creating the task with `awsvpc` mode.
+	AttachmentIndex *int `json:"AttachmentIndex,omitempty"`
+	// MACAddress is the MAC address of the network interface.
+	MACAddress string `json:"MACAddress,omitempty"`
+	// IPv4SubnetCIDRBlock is the IPv4 CIDR address block associated with the interface's subnet.
+	IPV4SubnetCIDRBlock string `json:"IPv4SubnetCIDRBlock,omitempty"`
+	// IPv6SubnetCIDRBlock is the IPv6 CIDR address block associated with the interface's subnet.
+	IPv6SubnetCIDRBlock string `json:"IPv6SubnetCIDRBlock,omitempty"`
+	// DomainNameServers specifies the nameserver IP addresses for the network interface.
+	DomainNameServers []string `json:"DomainNameServers,omitempty"`
+	// DomainNameSearchList specifies the search list for the domain name lookup for
+	// the network interface.
+	DomainNameSearchList []string `json:"DomainNameSearchList,omitempty"`
+	// PrivateDNSName is the dns name assigned to this network interface.
+	PrivateDNSName string `json:"PrivateDNSName,omitempty"`
+	// SubnetGatewayIPV4Address is the IPv4 gateway address for the network interface.
+	SubnetGatewayIPV4Address string `json:"SubnetGatewayIpv4Address,omitempty"`
+}